Bellows Sealed Globe Valves vs Globe Valve
2024-10-15
Bellows Sealed Globe Valves vs Globe Valve
Bellows Sealed Globe Valves vs Globe Valve
Bellows globe valves are a type of globe valve that utilizes a flexible metal bellows seal to ensure a tight shut-off and prevent leakage. These valves are commonly used in applications where the handling of toxic or hazardous materials is involved, or in processes that require a high degree of purity.
What is a Bellows Sealed Globe Valves?
A bellows globe valve is a valve designed to regulate or control the flow of fluid through a pipe. It consists of a spherical body, a bellows seal, and a rod connected to a disc or stopper. A bellows seal is a flexible assembly designed to provide a seal around the stem to prevent fluid leakage from the valve.
A bellows globe valve is a tube valve with an internal bellows seal for leak protection and to protect its stem from corrosion, thereby extending its service life.
Construction of Bellows Sealed Globe Valves
Bellows globe valves are made up of several components, including:
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Body: The body of a bellows globe valve is typically made of cast or forged steel and is designed to withstand high pressures and temperatures.
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Bonnet: The bonnet is the part of the valve that covers the stem and packing and is used to seal the valve against pressure.
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Stem: The stem is the component that connects the handwheel or actuator to the disk and moves the disk up and down to regulate flow.
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Disk: The disk is the component that controls the flow of the fluid through the valve.
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Bellows: The bellows is a flexible metal seal that is designed to compress and expand with the movement of the stem, to prevent leakage.
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Seat: The seat is the stationary component that the disk rests on to regulate flow and ensure a tight shut-off.
